Viscosity Stable SLS Free Toothpastes Containing Zinc Compounds and Arginine

Abstract

Disclosed are viscosity stable oral care compositions comprising a basic amino acid, a zinc ion source, and a surfactant system comprising one or more of alkyl glucosides, acyl glutamates, glycolipids, or a combination thereof, as well as to methods of using these compositions.

1 . An oral care composition comprising a basic amino acid in free or salt form, a zinc ion source and a surfactant system comprising one or more of alkyl glucosides, acyl glutamates, glycolipids, or a combination thereof. 
     
     
         2 . The composition of  claim 1 , wherein the surfactant system comprises an alkyl glucoside and an acyl glutamate or the surfactant system comprises a glycolipid. 
     
     
         3 . The composition of  claim 2 , wherein the alkyl glucoside is lauryl glucoside and the acyl glutamate is sodium cocoyl glutamate. 
     
     
         4 . The composition of  claim 3 , wherein lauryl glucoside is present in an amount of from 2% to 3% by weight of the composition and sodium cocoyl glutamate is present in an amount of from 2% to 3% by weight of the composition. 
     
     
         5 . The composition of  claim 2 , wherein the glycolipid is rhamnolipid. 
     
     
         6 . The composition of  claim 5 , wherein rhamnolipid is present in an amount of from 3% to 7% by weight of the composition. 
     
     
         7 . The composition of  claim 1 , wherein the surfactant system further comprises a betaine zwitterionic surfactant and a non-ionic block copolymer. 
     
     
         8 . The composition of  claim 7 , wherein the betaine zwitterionic surfactant is present in an amount of from 1% to 1.5% by weight of the composition and the non-ionic block copolymer is present in an amount of from 0.3% to 0.7% by weight of the composition. 
     
     
         9 . The composition of  claim 7 , wherein the betaine zwitterionic surfactant is cocamidopropyl betaine and the non-ionic block copolymer is a poly(propylene oxide)/poly(ethylene oxide) copolymer. 
     
     
         10 . The composition of  claim 1 , wherein the basic amino acid comprises one or more of arginine, lysine, citrulline, ornithine, creatine, histidine, diaminobutanoic acid, diaminopropionic acid, salts thereof, or combinations thereof. 
     
     
         11 . The composition of  claim 10 , wherein the basic amino acid comprises arginine. 
     
     
         12 . The composition of  claim 10 , wherein the basic amino acid is present in an amount of from 1% to 15% by weight of the composition, being calculated as free base form. 
     
     
         13 . The composition of  claim 1 , wherein the zinc ion source is selected from the group consisting of zinc oxide, zinc sulfate, zinc chloride, zinc citrate, zinc lactate, zinc gluconate, zinc malate, zinc tartrate, zinc carbonate, zinc phosphate and a combination thereof. 
     
     
         14 . The composition of  claim 13 , wherein the zinc ion source is selected from the group consisting of zinc oxide, zinc citrate, and a combination thereof. 
     
     
         15 . The composition of  claim 14 , wherein the composition comprises zinc oxide in an amount of from 0.5% to 2% by weight of the composition and zinc citrate in an amount of from 0.1% to 1% by weight of the composition. 
     
     
         16 . The composition of  claim 1 , wherein the composition comprises a fluoride ion source. 
     
     
         17 . The composition of  claim 1 , wherein the composition comprises a thickening agent, optionally wherein the thickening agent comprises xanthan gum and carboxymethyl cellulose. 
     
     
         18 . The composition of  claim 1 , wherein the composition comprises a silica abrasive. 
     
     
         19 . The oral care composition of  claim 1 , wherein the oral care composition is a toothpaste. 
     
     
         20 . (canceled)